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audio-signals frequency

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  • Audio signal processing — Audio signal processing, sometimes referred to as audio processing, is the intentional alteration of auditory signals, or sound. As audio signals may be electronically represented in either digital or analog format, signal processing may occur in …   Wikipedia

  • Audio noise measurement — is carried out when assessing the quality of audio equipment, such as is used in recording studios, broadcast studios, and in the home (Hi Fi).Noise in general refers to unwanted sound, often loud, but in audio systems it is the low level hiss or …   Wikipedia

  • Audio power — Sound measurements Sound pressure p, SPL Particle velocity v, SVL Particle displacement ξ Sound intensity I, SIL Sound power Pac Sound power level SWL Sound energy Sound energy density …   Wikipedia

  • Audio amplifier — An audio amplifier is an electronic amplifier that amplifies low power audio signals (signals composed primarily of frequencies between 20 hertz to 20,000 hertz, the human range of hearing) to a level suitable for driving loudspeakers and is the… …   Wikipedia

  • Audio engineering — An audio engineer at an audio console. An audio engineer, also called audio technician, audio technologist or sound technician, is a specialist in a skilled trade that deals with the use of machinery and equipment for the recording, mixing and… …   Wikipedia

  • Frequency-shift keying — Passband modulation v · d · e Analog modulation AM · …   Wikipedia

  • Audio converter — In signal processing, an audio converter or digital audio converter is a type of electronic hardware technology which converts an analog audio signal to a digital audio format, either on the input (Analog to digital converter or ADC), or the… …   Wikipedia

  • Audio system measurements — are made for several purposes. Designers take measurements so that they can specify the performance of a piece of equipment. Maintenance engineers make them to ensure equipment is still working to specification, or to ensure that the cumulative… …   Wikipedia

  • Frequency-division multiplexing — (FDM) is a form of signal multiplexing where multiple baseband signals are modulated on different frequency carrier waves and added together to create a composite signal. Non telephoneFDM can also be used to combine multiple signals before final… …   Wikipedia

  • Audio quality measurement — seeks to quantify the various forms of corruption present in an audio system or device. The results of such measurement are used to maintain standards in broadcasting, to compile specifications, and to compare pieces of equipment. The need for… …   Wikipedia

  • Frequency response — is the measure of any system s spectrum response at the output to a signal of varying frequency (but constant amplitude) at its input. In the audible range it is usually referred to in connection with electronic amplifiers, microphones and… …   Wikipedia

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